Reddanna P, Whelan J, Burgess J R, Eskew M L, Hildenbrandt G, Zarkower A, Scholz R W, Reddy C C
Department of Veterinary Science, Pennsylvania State University, University Park 16802.
Ann N Y Acad Sci. 1989;570:136-45. doi: 10.1111/j.1749-6632.1989.tb14914.x.